After reading Anne Coulter's editorial about Lott and Thurmond being converted Democrats, I began to question him as well. This is not the first time Lott has spouted off. Quoting a little from Ann's article which has other examples of Lott slip-ups...
Up until two weeks ago, conservatives were clamoring for Lott's removal precisely because of his annoying habit of saying dumb things. (Showing their inferior intellect, liberals have only recently figured that out.) Republicans should ask Lott to step down as leader, but only for all the nice things he's said about Teddy Kennedy.
While this may appear as another Republican cave-in, maybe many republicans figured it was a good time to get rid of some dead wood.